18,4403° N, 65,9789° W, waterdepth 1,2 m
Caribbean Sea and Bahamas Puerto Rico
Project: Modern Caribbean Sea
Geological Time: Quaternary Holocene recent
the specimen is picked and photographed by Dieter Ketelsen
from a sample provided by Dr.
The identification is based upon:
, : Ehrenberg, C.G. (1839). Über die Bildung der Kreidefelsen und des Kreidemergels durch unsichtbare Organismen. Abhandlungen der Königlichen Akademie der Wissenschaften zu Berlin, Physikalische Klasse. 1838: 59-147, pls. 1-4. Plate , Fig.